Zollner, L.* ; Boekstegers, F.* ; Barahona Ponce, C.* ; Scherer, D.* ; Marcelain, K.* ; Garate-Calderon, V.* ; Waldenberger, M. ; Morales, E.* ; Rojas, A.* ; Muñoz, C.* ; Retamales, J.* ; de Toro, G.* ; Kortmann, A.V.* ; Barajas, O.* ; Rivera, M.T.* ; Cortes, A.* ; Loader, D.* ; Saavedra, J.* ; Gutierrez, L.* ; Ortega, A.* ; Bertran, M.E.* ; Bartolotti, L.* ; Gabler, F.* ; Campos, M.* ; Alvarado, J.* ; Moisán, F.* ; Spencer, L.* ; Nervi, B.* ; Carvajal, D.* ; Losada, H.* ; Almau, M.* ; Fernandez, P.* ; Olloquequi, J.* ; Carter, A.R.* ; Miquel Poblete, J.F.* ; Bustos, B.I.* ; Fuentes Guajardo, M.* ; Gonzalez-Jose, R.* ; Bortolini, M.C.* ; Acuña-Alonzo, V.* ; Gallo, C.* ; Ruiz Linares, A.* ; Rothhammer, F.* ; Lorenzo Bermejo, J.*
Gallbladder cancer risk and indigenous South American Mapuche ancestry : Instrumental variable analysis using ancestry-informative markers.
Cancers 15:17 (2023)
A strong association between the proportion of indigenous South American Mapuche ancestry and the risk of gallbladder cancer (GBC) has been reported in observational studies. Chileans show the highest incidence of GBC worldwide, and the Mapuche are the largest indigenous people in Chile. We set out to assess the confounding-free effect of the individual proportion of Mapuche ancestry on GBC risk and to investigate the mediating effects of gallstone disease and body mass index (BMI) on this association. Genetic markers of Mapuche ancestry were selected based on the informativeness for assignment measure, and then used as instrumental variables in two-sample Mendelian randomization analyses and complementary sensitivity analyses. Results suggested a putatively causal effect of Mapuche ancestry on GBC risk (inverse variance-weighted (IVW) risk increase of 0.8% per 1% increase in Mapuche ancestry proportion, 95% CI 0.4% to 1.2%, p = 6.7 × 10-5) and also on gallstone disease (3.6% IVW risk increase, 95% CI 3.1% to 4.0%), pointing to a mediating effect of gallstones on the association between Mapuche ancestry and GBC. In contrast, the proportion of Mapuche ancestry showed a negative effect on BMI (IVW estimate -0.006 kg/m2, 95% CI -0.009 to -0.003). The results presented here may have significant implications for GBC prevention and are important for future admixture mapping studies. Given that the association between the individual proportion of Mapuche ancestry and GBC risk previously noted in observational studies appears to be free of confounding, primary and secondary prevention strategies that consider genetic ancestry could be particularly efficient.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Mendelian Randomization ; Ancestry-informative Markers ; Causal Inference ; Gallbladder Cancer ; Gallstone Disease ; Genetic Admixture ; Indigenous South American Mapuche Ancestry ; Instrumental Variables; Epidemiology; Admixture; Cholelithiasis; History
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2023
Prepublished im Jahr
0
HGF-Berichtsjahr
2023
ISSN (print) / ISBN
2072-6694
e-ISSN
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 15,
Heft: 16,
Seiten: ,
Artikelnummer: 17
Supplement: ,
Reihe
Verlag
MDPI
Verlagsort
St Alban-anlage 66, Ch-4052 Basel, Switzerland
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Epidemiology (EPI)
POF Topic(s)
30202 - Environmental Health
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-504091-001
Förderungen
German Research Foundation (DFG)
Ministry of Science, Research, and the Arts Baden-Wurttemberg
Copyright
Erfassungsdatum
2023-10-06